jc/docs/parsers/csv_s.md

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# jc.parsers.csv\_s

jc - JSON CLI output utility `csv` file streaming parser

> This streaming parser outputs JSON Lines

The `csv` streaming parser will attempt to automatically detect the
delimiter character. If the delimiter cannot be detected it will default
to comma. The first row of the file must be a header row.

Note: The first 100 rows are read into memory to enable delimiter detection,
then the rest of the rows are loaded lazily.

Usage (cli):

    $ cat file.csv | jc --csv-s

Usage (module):

    import jc
    # result is an iterable object (generator)
    result = jc.parse('csv_s', csv_output.splitlines())
    for item in result:
        # do something

    or

    import jc.parsers.csv_s
    # result is an iterable object (generator)
    result = jc.parsers.csv_s.parse(csv_output.splitlines())
    for item in result:
        # do something

Schema:

    csv file converted to a Dictionary:
    https://docs.python.org/3/library/csv.html

    {
      "column_name1":     string,
      "column_name2":     string,

      # below object only exists if using -qq or ignore_exceptions=True

      "_jc_meta":
        {
          "success":      boolean,     # false if error parsing
          "error":        string,      # exists if "success" is false
          "line":         string       # exists if "success" is false
        }
    }

Examples:

    $ cat homes.csv
    "Sell", "List", "Living", "Rooms", "Beds", "Baths", "Age", "Acres"...
    142, 160, 28, 10, 5, 3,  60, 0.28,  3167
    175, 180, 18,  8, 4, 1,  12, 0.43,  4033
    129, 132, 13,  6, 3, 1,  41, 0.33,  1471
    ...

    $ cat homes.csv | jc --csv-s
    {"Sell":"142","List":"160","Living":"28","Rooms":"10","Beds":"5"...}
    {"Sell":"175","List":"180","Living":"18","Rooms":"8","Beds":"4"...}
    {"Sell":"129","List":"132","Living":"13","Rooms":"6","Beds":"3"...}
    ...

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### parse

```python
@add_jc_meta
def parse(data, raw=False, quiet=False, ignore_exceptions=False)
```

Main text parsing generator function. Returns an iterator object.

Parameters:

    data:              (iterable)  line-based text data to parse
                                   (e.g. sys.stdin or str.splitlines())

    raw:               (boolean)   unprocessed output if True
    quiet:             (boolean)   suppress warning messages if True
    ignore_exceptions: (boolean)   ignore parsing exceptions if True

Yields:

    Dictionary. Raw or processed structured data.

Returns:

    Iterator object (generator)

### Parser Information
Compatibility:  linux, darwin, cygwin, win32, aix, freebsd

Version 1.3 by Kelly Brazil (kellyjonbrazil@gmail.com)